Adjustable router



C. FINK.

ADJUSTABLE ROUTER.

APPLICATION FILED JUNE 30,19I4.

Patented Aug. 22, 1916.

Illlll mx I @ venfor:

Charles Iflzi Specification of Letters Patent.

. ADJUSTABLE ROUTER. f

Patented Aug. 22,1916.

Application led June 30, 1914. Serial No. 848,268.` l

To all whom' t may concern a Be it known that I, CHARLES FINK, citizen of the United States, residing at Baltimore, Maryland, have invented certain new and useful Improvements in Adjustable Routers, of which the following is a specification.

The present invention relates to bench A planes and pertains more particularly to that class of planes known as routers, which are adapted to be used in cutting out square or rectangular recesses.` This type of plane is of special value in forming recessed places along the edges of doors or windows in which metal plates, such as hinge plates, are adapted to be countersunk.

rIhe principal object of the invention consists in providing a router plane of the class above descrbed,having the usual-form of vertically adjustable cutting tool andbeing formed` of two sections hinged together in such manner as to provide an additional secondary adjustment of the parts.

With these and other objects the invention consists in the combination and arrangement of parts more fully set forth in the following specification, illustrated in the accompanying drawings and pointed out in the appended claims.

In the drawings: Figure 1 is a longitudinal section with parts in elevation, Fig. 2 is a plan view. Fig. 3 is a transverse sectional view on line 3 3 of Fig. 2.

Referring to the drawings, the router consists of an inner section 1, and an outer section 2 adapted to fit one within the other and hinged together at the back of the tool. The two side pieces of the outer section 2 are formed with perforated ear pieces 3 at their riear ends. The inner section 1 is provided with an integral upturned end piece 4 formed at right angles to the lower edge of the tool and having a horizontal bore 4a near its lower end. A pin 5 passing through the perforations in the ear pieces 3 and the bore 4a form a swiveled, hinged connection between the two sections of the plane.

The inner section 1 is provided with a transverse plate 6 located midway of its length from which is centrally supported a vertical .tool post 7. The tool post is formed with an angular groove extending up its front face against which the rear edge of the cutting tool 8 is clamped. A screw stud 9 is screwed rigidly into the tool post 7 and carries an adjustable knurled nut 10 l. n

threaded thereon, which latter registers in a notch 11 in the rear'edge of the tool shank. A clamping member 12 is provided having a yoke piece 13 at its forward end passing around the tool 8 and tool post 7. The clamping member 12 extends horizontally and passes through a perforation 4b formed in the upturned end piece 4. A knob 14 having an internal nut 15 securely fastened therein is screw-threaded on the projecting end of the clamping member 12, as shown in Fig. 1. The stemportion of the clamping piece 12 intermediate of the tool post 7 and upright 4 is flattened and has riveted thereto wooden pieces 16 to form a suitable handle. j f

Both the inner and outer section pieces are formed with openings 18 through which the cutting tool 8 extends. These are made of suitable size and shape to allow the shavings out to pass upward from the cutting edge of the tool.

The two sections are held together near the forward part ofthe tooly by a coiled spring 17 contained within a hollow boss 18l formed on the inner section 1. A screw post 19 having an upper shoulder 20 is centrally fastened within the boss 18 and is rigidly secured at its lower end to the outer section 1. The coiled spring 17 which surrounds this post has its lower end bearing on the inner section 2 and itsupper end against the shoulder 20 tends to keep the two sections together.

The secondary adjustment of the router consists of a vertical adjusting post 21 screw threaded into a boss 22 formed near the front end of the inner section 1. The upper end of the post carries the knob piece 23 by which it is easily manipulated and has its lower end passing through la hole 24 in the inner section l and bearing on the outer section 2.

In operation the two sections of the router are first brought together. The tool 8 is then set to the required depth to be routed out below the surface by means of the adjusting nut 11 and the clampingpiece 12 tightened by the knob 15. The surface to be routed out is rst roughened out to within, say three siXteenths of an inch of the required depth. The two sections are then opened by means of the secondary adjust ment screw 21 until the tool 8 just touches fel the roilghened-A surface. The finishing of the cut is done by degrees by giving the .Y

knob 23 slight turns, thereby takingvlight cuts in succession until the' two sections' are again brought together. It will be'fseen-that' the tool will have cut the full depth required.v

Having described my invention what Iv` claim is:

l. A router plane comprising in combination plane'rbody'y and' sole members extendingsubstantially" parallel throughout the length' of the-plane',\a hingedl connection be-v tween' said members at one end, spring-held I'neansconnectingsaid members'near the opposite end tending to hold the't members together, an; adjustable cutting' toolcarried by said inner member and adjustingmeans atI Springfheld means connecting. Said members near the forward end tending to hold the members` together, .an adjustable cutting 30 r embodying`- ay 'handle or knob adapted to serve as guiding means in the manipulation of the plane.

3, rout'er planecor'np'risrin'g in combination 'inner' and outer sections, hinged to-v getherat'one end, spring held means: connecting said sections near the oppositefend and tending to: hold the sections' together, adjustable means operating at right" angles to the base of 'the plane fornpening said sectionsI from each otherv and an adjustable cutting `tool carried by' saidv inner section, substantially described.

, CHAS. FINK.

C HAs. F. Fini, OTTO FISClIiR. 

